Home / 121,154.40-181,785.60-42,325.20

Finding the Fourth Proportional to 121,154.40, 181,785.60 and 42,325.20

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Solution

The fourth proportional to 121,154.40, 181,785.60 and 42,325.20 is: 63,506.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,154.40 : 181,785.60 = 42,325.20 : x
  2. Step 2: Convert to fraction form
    121,154.40/181,785.60 = 42,325.20/x
  3. Step 3: Cross multiply
    121,154.40x = 181,785.60 × 42,325.20
  4. Step 4: Simplify right side
    121,154.40x = 7,694,111,877.12
  5. Step 5: Solve for x
    x = 7,694,111,877.12/121,154.40
  6. Step 6: Final answer
    x = 63,506.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.